Tianjin British Concession, Jishi Clinic. While Shen Huaiqing was stitching up the gunshot wound of the traitor Jin Hansheng, a voice in Japanese came from outside the door. Yamamoto Shiyi, a military doctor in the special high school, kicked open the door and put the muzzle of his gun against the back of Shen Huaiqing's head: "You healed the wound, and I killed the guerrillas - we are a good match." Without shaking his fingers, Shen Huaiqing finished the last stitch, turned around and handed over a bottle of "iodine volts": "Disinfect the wound, don't get infected." Yamamoto took it, dipped it in cotton, and applied it on the back of his newly cut hand. Three seconds later, his pupils dilated - the bottle of "iodophor" was mixed with a high concentration of aconitine. The moment Yamamoto fell, Shen Huaiqing pulled out the Fourteenth Southern Style from his waist and fired four shots at the two Japanese soldiers outside the door. Before the body had cooled down, three masked men walked in from the back door of the clinic: Fang Xiuzhi, the liaison officer of "Qingfeng". She threw him a new task: the Japanese Army's North China Secret Service was secretly establishing a bacteria laboratory in the concession, and the person in charge was a disciple of Yamamoto's teacher, Shiro Ishii. Shen Huaiqing wiped the blood from the scalpel: "I will prescribe as much poison as you need." But he didn't know that the last telegram sent by Yamamoto before his death had already drawn Tokyo's attention to the "Tinmen Jishi Clinic". Tomorrow, the real hunters will embark from Japan itself.